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<h2><a href="closure_goog_positioning_anchoredposition.js.html">anchoredposition.js</a></h2>

<pre class="prettyprint lang-js">
<a name="line1"></a>// Copyright 2006 The Closure Library Authors. All Rights Reserved.
<a name="line2"></a>//
<a name="line3"></a>// Licensed under the Apache License, Version 2.0 (the &quot;License&quot;);
<a name="line4"></a>// you may not use this file except in compliance with the License.
<a name="line5"></a>// You may obtain a copy of the License at
<a name="line6"></a>//
<a name="line7"></a>//      http://www.apache.org/licenses/LICENSE-2.0
<a name="line8"></a>//
<a name="line9"></a>// Unless required by applicable law or agreed to in writing, software
<a name="line10"></a>// distributed under the License is distributed on an &quot;AS-IS&quot; BASIS,
<a name="line11"></a>// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<a name="line12"></a>// See the License for the specific language governing permissions and
<a name="line13"></a>// limitations under the License.
<a name="line14"></a>
<a name="line15"></a>/**
<a name="line16"></a> * @fileoverview Client positioning class.
<a name="line17"></a> *
<a name="line18"></a> */
<a name="line19"></a>
<a name="line20"></a>goog.provide(&#39;goog.positioning.AnchoredPosition&#39;);
<a name="line21"></a>
<a name="line22"></a>goog.require(&#39;goog.math.Box&#39;);
<a name="line23"></a>goog.require(&#39;goog.positioning&#39;);
<a name="line24"></a>goog.require(&#39;goog.positioning.AbstractPosition&#39;);
<a name="line25"></a>
<a name="line26"></a>
<a name="line27"></a>
<a name="line28"></a>/**
<a name="line29"></a> * Encapsulates a popup position where the popup is anchored at a corner of
<a name="line30"></a> * an element.
<a name="line31"></a> *
<a name="line32"></a> * When using AnchoredPosition, it is recommended that the popup element
<a name="line33"></a> * specified in the Popup constructor or Popup.setElement be absolutely
<a name="line34"></a> * positioned.
<a name="line35"></a> *
<a name="line36"></a> * @param {Element} anchorElement Element the movable element should be
<a name="line37"></a> *     anchored against.
<a name="line38"></a> * @param {goog.positioning.Corner} corner Corner of anchored element the
<a name="line39"></a> *     movable element should be positioned at.
<a name="line40"></a> * @param {number=} opt_overflow Overflow handling mode. Defaults to IGNORE if
<a name="line41"></a> *     not specified. Bitmap, {@see goog.positioning.Overflow}.
<a name="line42"></a> * @constructor
<a name="line43"></a> * @extends {goog.positioning.AbstractPosition}
<a name="line44"></a> */
<a name="line45"></a>goog.positioning.AnchoredPosition = function(anchorElement,
<a name="line46"></a>                                             corner,
<a name="line47"></a>                                             opt_overflow) {
<a name="line48"></a>  /**
<a name="line49"></a>   * Element the movable element should be anchored against.
<a name="line50"></a>   * @type {Element}
<a name="line51"></a>   */
<a name="line52"></a>  this.element = anchorElement;
<a name="line53"></a>
<a name="line54"></a>  /**
<a name="line55"></a>   * Corner of anchored element the movable element should be positioned at.
<a name="line56"></a>   * @type {goog.positioning.Corner}
<a name="line57"></a>   */
<a name="line58"></a>  this.corner = corner;
<a name="line59"></a>
<a name="line60"></a>  /**
<a name="line61"></a>   * Overflow handling mode. Defaults to IGNORE if not specified.
<a name="line62"></a>   * Bitmap, {@see goog.positioning.Overflow}.
<a name="line63"></a>   * @type {number|undefined}
<a name="line64"></a>   * @private
<a name="line65"></a>   */
<a name="line66"></a>  this.overflow_ = opt_overflow;
<a name="line67"></a>};
<a name="line68"></a>goog.inherits(goog.positioning.AnchoredPosition,
<a name="line69"></a>              goog.positioning.AbstractPosition);
<a name="line70"></a>
<a name="line71"></a>
<a name="line72"></a>/**
<a name="line73"></a> * Repositions the movable element.
<a name="line74"></a> *
<a name="line75"></a> * @param {Element} movableElement Element to position.
<a name="line76"></a> * @param {goog.positioning.Corner} movableCorner Corner of the movable element
<a name="line77"></a> *     that should be positioned adjacent to the anchored element.
<a name="line78"></a> * @param {goog.math.Box=} opt_margin A margin specifin pixels.
<a name="line79"></a> * @param {goog.math.Size=} opt_preferredSize PreferredSize of the
<a name="line80"></a> *     movableElement (unused in this class).
<a name="line81"></a> * @override
<a name="line82"></a> */
<a name="line83"></a>goog.positioning.AnchoredPosition.prototype.reposition = function(
<a name="line84"></a>    movableElement, movableCorner, opt_margin, opt_preferredSize) {
<a name="line85"></a>  goog.positioning.positionAtAnchor(this.element,
<a name="line86"></a>                                    this.corner,
<a name="line87"></a>                                    movableElement,
<a name="line88"></a>                                    movableCorner,
<a name="line89"></a>                                    undefined,
<a name="line90"></a>                                    opt_margin,
<a name="line91"></a>                                    this.overflow_);
<a name="line92"></a>};
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